I have listened to the sound at 1:30.
What we really need to understand is not the name of the effect you want, but the fundamental principal at work here.
To get stereo width, you want to introduce asymmetry into the left and right channels for a particular sound. This can be done with chorus, a stereo width plugin, or manually. I find that manually creating stereo width can have the best effects.
So to try and achieve that sound, I recommend doing it manually. This involves the following steps.
- Make your synth.
- Duplicate it.
- Pan one all left pan one all right.
- Make left and right different.
So the magic will actually be in step 4. How do you want to make it different? You can pitch the left and right up or down very slightly. Or you could even use different EQing on the left and right.
What I think is being done in this case, is that one track is slightly delayed. Ableton, for example, lets you specify a ms delay for any track. I recommend specify a slight delay in the left or right channel by 10 - 50 ms. Also you might want to try to EQ the left and right differently. Try giving a bump around 10khz for one channel.
EDIT: After more listens I even think that the left and right channel have slightly different synth patches. So they started with the same synth patch, panned one instance left and right, then changed parameters of one synth like ADSR and filter resonance.
But really what you need to remember is that stereo width is achieved by introducing asymmetry in the left and right channel.